Ruby regex replace capture group

You can't. gsub replaces the entire match; it does not do anything with the captured groups. It will not make any difference whether the groups are captured or not.
In order to achieve the result, you need to use lookbehind and lookahead.

"5,214".gsub(/(?<=\d),(?=\d)/, '.')

Source: stackoverflow.com

Similar codes

0 vote194 views1 answer
Ruby create object with attributes
Ruby
0 vote238 views1 answer
Rails order
Ruby
0 vote185 views1 answer
Pg_ctl: no database directory specified and environment variable PGDATA unset
Ruby
0 vote270 views1 answer
Backtracking solution in ruby
Ruby
2 votes193 views2 answers
How to create migration with uniqueness inrails
Ruby
1 vote182 views1 answer
Is identation madatory in ruby
Ruby
45 votes291 views10 answers
Youtube
Ruby
0 vote198 views6 answers
Https://web.roblox.com/users/1525026441/profile
Ruby
0 vote185 views1 answer
Rails active record to fetch only list of ids
Ruby
0 vote191 views1 answer
Division in ruby
Ruby